I've posted about this same issue before and just today a Nissan Tech and myself figured out what's going on. Basically there is too much axle wind up on take off and when stopping. If you look at the rear spring shackle clamp, you'll see a rubber bushing mounted on the top of this clamp and about 1/2" of room before the spring even touches it. The whole axle assembly twists up far enough at take-off to make the drive shaft assy. flip upwards and hit the limits of the center bearing. When your slowing down and just before the wheels stop spinning you'll get a clunk as well, the opposite is happening.
The Nissan Tech is going to get the engineers in California to look into this and see what a good fix would be. Personally I think traction bars would look cool......yes they would stop the axle wind-up but on a truck?????
I'm not sure what the overall fix will be but I will be sure to let everyone know.
Dale